To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Up Next Previous Page Next Page An extremely rare, completely round egg has been found by a shell-shocked farm worker. Farm worker Ali Greene has seen tens of thousands of eggs during her time at Fenton Farm, near Tiverton in Devon. But she was left stunned by finding one that was completely spherical – something that has a one-in-a-billion chance of occurring. ‘I’ve probably processed about 30,000 eggs since I’ve been here’, said Ali. The ultra-rare egg was discovered at a farm in Devon (Picture: SWNS) ‘I put the eggs on a conveyor belt and they then get dropped into trays. ‘And this one just wouldn’t go through into the trays because it was the wrong shape. ‘I took it out and showed it to Andrew, the boss. I did some research and found spherical eggs are one-in-a-billion.’ But rather than keep it for herself, kind-hearted Ali is now set to auction off the rare egg and donate the proceeds to charity. Farm worker Ali Greene made the one-in-billion discovery (Picture: Ali Greene / SWNS) She contacted auctioneers Bearnes Hampton & Littlewood who told her they would put it up under the hammer. Ali added the egg was now covered in lard and salt to help preserve it. ‘Whoever buys it will probably want to blow it and keep the shell intact.They can mount it and be one of the few people on the planet to own one.’ ‘It’s a beautiful egg,’ she said. ‘I just wish we knew which chicken had laid it, because she won’t ever lay another one. Follow Metro on WhatsApp to be the first to get all the latest news Follow us to receive the latest news updates from Metro (Picture: Getty Images) Metro’s on Whatsapp! Join our community for breaking news and juicy stories. The egg will be auctioned off for